Rotating device for fans



P 1932- J. R. FERGUSON ROTATING DEVICE FOR FANS Filed July 8, 1929 INVEN TOR.

A TTORNEYS.

I Patented Sept. 27, 1932 JAMES B. rnneuson, or pALLAs, TEXAS,AssINOaoronE-mmr row. n. mm-

TON, or DALLAS, TEXAS ROTATING DEVICE FOR FANS I Application filed July8, 1929. "semi 30. 376,575.

This invention relates to electric fans and it has particular referenceto fans for desk and table use and the principal object of the inventionresides in the provision of a fan of the character wherein is providedmechanism so designed and arranged as to cause said fan to rotate on itsbase, to produce the maximum of air circulation.

Another object of the invention is to provide, in fan rotating mechanismas set forth, a novel control by whlch the fan 1s caused to ceaserotating, without afiecting the action I atblto rotatably receiveajsetscrew 6. The

of the fan proper as concerns its speed.

The invention further comprehends the provision of mechanism calculatedto bring about the results mentioned, which may be effectively appliedas an attachment to the conventional oscillating or stationary type offans with only minor alterations in the structure thereof, which willenable said fans to make complete revolutions, to increase theireffectiveness in bringing about maximum air circulation.

With these objects as paramount, the invention has particular referenceto its salient features of construction and arrangement of parts, to behereinafter explained 'in detail and illustrated in the accompanyingdrawing wherein Figure 1 is a side elevational view of an electric fanembodying the invention.

Figure 2 is a rear elevational view ofthe invention.

FigureB is a bottom View of the invention.

Figure 4 is a bottom view of the invention showing a modification of thedriving mechanism.

Figure 5 is an elevational view of the modification exemplified inFigure 4 having a portion of the base cut' away to illustrate thepreferred type of contact, and

Figure 6 is a fragmentary cross section of the rotating axis showing thepreferred type of contact.

While the ordinary fan of the type menioned may be caused to oscillateand circulate the air overa given area, no provision has heretofore beenmade, as an "attachmentfor the ordinary fan, to enable itto circulatethe air in all directions, It is the purpose, therefore, of thisinvention to provlde' a means whereby this may be accomplished. aAccordingly, therefore, the invention comprises a, base member 1, havinga slot a adjacent thetop-thereof to receive the flattened,

portionof a: cup shaped member 2 within].

which is threaded. a sleeve 3 the latter being.

integral with 4. a flanged wheel 4: which. .is

vrigidlymounted-on a hollow stub shaft 5,

the latter being shown in detail in Figure 6. The shaft 5 iscircumferentially grooved sleeve 7 being rigidly attached to the fan asshown in Figure 6.

Extending vertically through, the hollow flanged wheel 4:,

shaft 5, an insulated core .9 conducts the cur-' rent from the wiresIO'in-the base 1 into the motor 8'by means. of the armature 11 whichslidably engage the lowerfend of the core 9 in the groove'oto make acontinuous contact at d and e while'the motor8 revolves.

- The motor 8 is providedjwith, a shaft 12 on one end of which the fan13 is mounted while on the other end a series of gears of'a conventionalnature are mounted, the'} latter being encased in the gear box 12 at therear of the motor v8. Bytransverse arrangement of gears, the verticalshaft 15 is drivento rotate the flanged wheel 16 which rigidly engagesthe shaft 15 when the friction clutch. 17 is operated upward by turningthe knurled washer 18. A cam 19 is also mounted. on the shaft 15 tofreely rotate thereon until the friction clutch '17 is operated downwardby the knurled washer 18 to engage the face of the cam 19 to cause thelatter to rotate with the shaft 15. Aconnecting; arm 20 is eccentricallypivoted to the cam 19 by means of a small boltfor pin 21. At the outeredge of I the cam 19, the other'end of the connection 20 being attachedto a projection 22 ofa ring 7 23 surroundingthe threaded sleeve 22. A

set screw 24, having a knurledhead, is p r0' vided to secure the ring.23 to thethreaded sleeve 3 when desirable, as shown in detail in AFigure 6. A belt 25 is provided to surround the flange wheels 4 and 16,as shown in Figures 1, 2 and 3.

Figures 4 and 5 illustrate the invention in modified formwhich iscomprised of a gear 26 mounted integrally with the sleeve 3 and remainsstationary with the base 1 when the motor 8 rotatest An intermediategear '27 is mounted on a stub shaft 28 to engage the gear 26 and agear29 which is mounted on the shaft 15. This arrangement maybe used inplace of the flanged wheels 4 and 16 with the same results, if desired.

In operation, the current being turned on,

J AMES R. FERGUSON,

passes through the wire 10 in the base 1,

through the armatures 11 into the insulated core 9 and thence to themotor 8. to set the latter; into motion.

As the shaft 12 revolves, the vertical shaft 15 is driven by the gearsin the gear box 14 to actuate the flanged wheel 16 around which the belttravels. The flanged wheel 4, be- 3 ing stationary, the belt 25 passesaround the latter with the result that the flanged Wheel 16 propels thefan in a circular motion.

7 When only an oscillating movement is desired, the knurled washer 18 isurged downward until the clutch 17 engages the cam 19 which sets thepitman 20 inmotion causing the fan to move in a semi-circle from left toright. v

' It will be noted that before the fan will rotate in a complete circle,the set screw 24 must be loosened to allow the ring 23 to moveObviously, the construction shown is capable of considerablemodification and such modification asisconsidered within the scopefreely around the-sleeve 3, and to obtain an oscillating movement,the'ring 23 must besecured to the sleeve 3 by the set screw 24.

and meaning of the appended claims without departing from the'spirit'and' intent of the V invention.

What is claimed isi 1. In an electric fan, the combination with thespindle shaft thereof having a gear thereon, a shaft at right angles andhaving operative engagement with and to' be'rotated by said first shaft,a grooved pulley attached to said second shaft,'a stationary base memberpivotally supporting said fan, a stationary grooved pulley on said basemember, a flexible belt surroundingsaidpulley, a frictional member alsocarried by saidsecond shaft and capable of movement thereon and meansfor moving sald frictional member against and away fromsaid firstmentioned pulley to efiect the movements of said fan,

2111i an electric fan, the combination with I a motor and spindle shaftof said fan, a sec- 0nd shaft operated by said spindle shaft in aplanefat right angles to said latter shaft, a

grooved pulley mounted on s aid second shaft,

a disc also mounted on said second shaft, a

stationary base for said motor having a

